If I took a wrecked cobalt ss s/c engine and wanted to put it in a 2.4L what all would i need? And to make this question a little harder...lol my 2.4 is automatic

would i have to swap transmission too?

 

It's not impossible, but VERY involved. You have the benefit of an ECM that is supported by HP Tuners, so you would be able to tune it. In fact, you could probably pull a stock tune off of a SS/SC, then copy and paste it right into your own computer. Additionally, HP Tuners supports our transmissions and controllers too, so you're OK there as well. The bell housings are also the same.

The trick is going to the cooling system. There is alot more to the LSJ then just the engine. You have to have the laminov cooler and radiator as well.

On a more practical note, while the swap you suggest is prehaps the most possible of all the Cobalt swaps, it's just not practical. You will probably find it cheaper to buy a used 2005 SS/SC.

However, the one thing you idea gives you is an automatic trans equipped LSJ. Which in fact would be pretty cool.

 

wait....why????????? im not too familiar with fwd, but if it is the same as rwd tranny wise or similar, your bell housing may not match up to the motor. not sure. Unless you can get the motor for REALLY cheap, you would be better off selling the 2.4, getting an ss/sc and doing an auto swap if you really want an auto.

 

Your best approach is going to be using the LSJ crank with upgraded rods and pistons in your 2.4L block. Upgrade the transmission to the drag version of the 4t65e so you can handle some power, and use HP tuners to get things running well. It'll end up being simliar to a turbo conversion, and get you less net horsepower, though, so, you'd be better off going with the full ecotec drag car type setup.

Edit: for the guy above, the blocks all have the same bellhousing bolt patterns, although the manual transmission clutch in the LSJ is different than in the other manual transmissions, so always make sure you have flywheel, clutch, and transmission or flexplate, torque converter, and transmission for a swap.

 

This is an interesting idea, however replacing the entire block would be better because then you get the bore sleeves and tighter bottom end.

However, if this was my project, I'd just use the money to convert the 2.4L to the first supercharged LE5, OR just turbo charge. an engine swap wouldnt net you nearly as much power, and would cost MORE than a trade in.

 

I wouldn't say the first supercharged LE5. Buddy of mine in south Georgia with a silver SS 2.4L has a custom Supercharger. With a 2.7 pulley that thing hauls ass to 280hp to the ground. The way he drives it'll be totalled in about 2 weeks.

 

SSBOOST...somehow or another, im going to call bullshit.

arnt you the guy who said we'll net 60hp from the vibrant headers? LOL

 

Ask your buddy to post-up!

We would all love to learn from his project, especially the tuning, and would be sure to give him props for being such an innovator.

 

??? Don't know what you've heard, but although the LSJ crank is stronger than the LE5 one, the LE5 block is stronger than the LSJ block.

 

Source? They both have forged rods, the LSJ has a forged crank, but none of the Cobalt Ecotecs have forged pistons. He's be better off IMO if he's going to use a block to use the LSJ block.

 

Somehow everytime someone says anything about a motor swap all I picture is a honda somewhere in a junkyard missing an engine.

Oh yeah what about emissions and all that?

 

....i guess it must be really expensive in the states to buy written off cars..come to canada guys. ive already got my smashed up ss/sc and i tell yah..it was a HELL of a lot cheaper thne buyin a used one...now u might be talkin about the price being more because of doin all the labour..but essentially..when uhave everything there and u have the knowledge (i do, i have been fixing wrote off cars since i was 14) so all in all..i would personally do the swap.

 

I'm talking about the block, you're talking about an assembled shortblock. Two different things. That's why I recommended upgrading the pistons and rods, lol.

 

you mean the actual core? I was under the impression the cores were all the same and the 2.2, 2.0, and 2.4 just had different strokes.

 

2.2 and 2.0 are same bore / different stroke, but the 2.4 is larger in both than the 2.0 or 2.2.

 

ok than technically the 2.4 should be the weakest core of all of them and it has a less desirable deisgn for forced induction as it has a longer stroke and is farther from being square.... I still don't get how the 2.4 core is stronger.

 

You guys don't work on engines, much, lol. The 2.4L block with a LSJ crank in it, will only be a little bit off of being square, and certainly will NOT be 2.4L's.

 

You guys don't work on engines, much, lol. The 2.4L block with a LSJ crank in it, will only be a little bit off of being square, and certainly will NOT be 2.4L's.

 

ok this still does not make the 2.4 core any stronger....at all. the 2.0 has shorter stroke, so putting the lsj crank in it will basically just bring it down in displacement, so again...what is the point of using the 2.4 block?

 

2.4block woth 2.0 crank will equal about 2.2l... but with a **** LOAD stronger crank, and shorter stroke meaning more reliable at higher revs.

 

The LE5 block is the latest and most updated of the non-DI blocks. It has a revised girdle on the bottom end and it's bore is only a little larger than the 2.2/2.0 block. Having a larger bore does allow you a little more room for bigger valves. You're definately right in thinking that the shorter stroke engine is generally going to be stronger than the longer stroke engine. The "crossbreed" or "hybrid" ecotec I'm talking about would have the exact same stroke as the LSJ, since it would be using the same crank. A "core" is something that is sent back to a place that sends you a new or rebuilt engine, etc. "Core" is NOT the proper term for the component that is the block intself. A longblock is an assembled engine including head an valvetrain, a shortblock an assembled bottom end included crank, rods, and pistons. A "block" is the bare component that all the other components in an engine attach to.

 

ahhh i see, thanks for clarifying.

 

Try again, I said that I heard from a friend that RSX Type-S gets its extra hp from the headers. Being that I knew nothing of headers it made since to me. As for calling bullshit I'll see if he can get on the forums. And if you think about it, its a CUSTOM supercharger being that you aren't limited to what GM has for you. Also, it doesn't get the power from the supercharger alone, it has bolt-on upgrades too for the extra flow and for allowing the supercharger to fit and give that right amound of boost. If you wanna call bullshit, talk about something that would seem to be impossible, not 20 more horsepower than a Stage 2 GM kit.

 

ill talk about something impossible. HeaderS on a 4 banger.

 

That's just getting picky. 90% of the people here say headers even when they know better. I would have to hope that someone who did a custom job like that would know the difference.